{
  "calculator": "ffmi-calculator",
  "title": "FFMI Calculator",
  "site": "AI Fit Hub",
  "input": {
    "body_fat_pct": 15,
    "height_cm": 178,
    "weight_kg": 80
  },
  "defaults_used": {},
  "result": {
    "ffmi": 21.461936624163616,
    "adjustedFfmi": 21.587936624163618,
    "fatFreeMassKg": 68,
    "interpretation": "Above average — consistent training"
  },
  "provenance": {
    "run": "https://aifithub.io/api/run/ffmi-calculator?body_fat_pct=15&height_cm=178&weight_kg=80",
    "page": "https://aifithub.io/ffmi-calculator/",
    "methodology": "https://aifithub.io/methodology/ffmi-calculator/",
    "contract": "https://aifithub.io/contracts/ffmi-calculator.json",
    "engine": "https://aifithub.io/engines/ffmi-calculator.js",
    "engine_sha256": "7b5c612bbca5399bdb348b75011fc1a139c49f1c773ed8186e8edc55c6f51570",
    "build": "f934d40826a83bc97b57de9b7f894502cfdf221d"
  },
  "disclaimer": "General fitness estimates — not medical advice.",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "cite": "AI Fit Hub, FFMI Calculator (engine 7b5c612bbca5), https://aifithub.io/api/run/ffmi-calculator?body_fat_pct=15&height_cm=178&weight_kg=80"
}